Investigations of elastic vibration periods of reinforced concrete moment-resisting frame systems with various infill walls

Al-Balhawi, Ali; Zhang, Binsheng

doi:10.1016/j.engstruct.2017.08.016

Cited by 9 publications

(3 citation statements)

References 40 publications

(85 reference statements)

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“…They found that periods of vibration of bare frames reasonably agrees with codes formulas by disregarding contributions of infills' stiffness towards the structural systems. On the other hand, the proposed formulas for RC MRF buildings with un-cracked infills agree well with most cited experimentally based formulas and some numerically based ones [14].…”

Section: Comparison Between Numerical Analyses Results and Code Formulassupporting

confidence: 83%

An Investigation of the Fundamental Period of Vibration for Moment Resisting Concrete Frames

2019

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The determination of fundamental period of vibration for structures is essential to earthquake design. The current codes provide empirical formulas to estimate the approximated fundamental period and these formulas are dependent on building material, height of structure or number of stories. Such a formulation is excessively conservative and unable to account for other parameters such as: length to width ratios, vertical element size and floors area. This study investigated the fundamental periods of mid-rise reinforced concrete moment resisting frames. A total of 13 moment resisting frames were analyzed by ETABS 15.2.2, for gross and cracked eigenvalue analysis and Extreme Loading for Structures Software® or ELS, for non-linear dynamic analysis. The estimated periods of vibration were compared with empirical equations, including current code equations. As expected, the results show that building periods estimated based on simple equations provided by earthquake design codes in Europe (EC8) and America (UBC97 and ASCE 7-10) are significantly smaller than the periods computed using nonlinear dynamic analysis. Based on the results obtained from the analyzed models, equations for calculating period of vibration are proposed. These proposed equations will allow design engineers to quickly and accurately estimate the fundamental period of moment resisting frames with taking different length to width ratios, vertical element size, floors area and building height into account. The interaction between reduction factor and the reduced period of vibration is studied, and it is found that values of maximum period of vibration can be used as an alternative method to calculate the inelastic base shear value without taking reduction factors in consideration.

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Section: Comparison Between Numerical Analyses Results and Code Formulassupporting

confidence: 83%

An Investigation of the Fundamental Period of Vibration for Moment Resisting Concrete Frames

2019

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“…In the study, it is suggested to establish and analyse numerical models of both single high-rise buildings and 4 high-rise buildings for a safe design, and to adopt the envelope value in the seismic design of such buildings. Balhawi and Zhang (2019) investigated to vibration periods of tall reinforced concrete office buildings. In this study, RC frame-shear wall systems designed under gravity and wind loadings have been evaluated by utilising 3D FE modelling incorporating eigen-analysis to obtain the elastic periods of vibration.…”

Section: Introductionmentioning

confidence: 99%

Investigation of RC Buildings with Basement Floor using Single and Two Loaded Approaches in TBEC-2018

Karaca,

Sevim

2023

Preprint

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Population growth and the resulting increased parking lots etc. needs buildings with basement floors. Moreover, it is clear that the buildings with basement floors have a high degree of rigidity. Turkish Building Earthquake Code-2018 introduced new approaches for finite element modelling and earthquake analysis of buildings with basement floor. One of them is that two-loaded state and the other one is single-loaded state. While the upper section and the lower section (basement) masses are considered separately in the two-loaded analysis, they are taken into account in the combined model in the single-loaded analysis. The study aims to investigate the effectiveness of these two approaches. For the purpose, a RC building with 1 basement floor + 5 storeys is separately modelled considering both of single-loaded and two-loaded approaches. Finite element analyses are performed using mode combination technique. The storey shear forces, displacements, column and wall internal forces were compared obtained for both single-loaded and two-loaded models. The results show that the bot of method should be used to design of RC building with basement floor.

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“…Almost all the previous developed models give direct relations of the 1418 fundamental vibration period to buildings height. However, it was shown that previous simple models resulted in significantly large variations in predictions [17][18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Estimating vibration period of reinforced concrete moment resisting frame buildings

Alrudaini

2023

Res. Eng. Struct. Mater.

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DisclaimerAll the opinions and statements expressed in the papers are on the responsibility of author(s) and are not to be regarded as those of the journal of Research on Engineering Structures and Materials (RESM) organization or related parties. The publishers make no warranty, explicit or implied, or make any representation with respect to the contents of any article will be complete or accurate or up to date. The accuracy of any instructions, equations, or other information should be independently verified. The publisher and related parties shall not be liable for any loss, actions, claims, proceedings, demand or costs or damages whatsoever or howsoever caused arising directly or indirectly in connection with use of the information given in the journal or related means.Published articles are freely available to users under the terms of Creative Commons Attribution -NonCommercial 4.0 International Public License, as currently displayed at here (the "CC BY -NC").

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Investigations of elastic vibration periods of reinforced concrete moment-resisting frame systems with various infill walls

Cited by 9 publications

References 40 publications

An Investigation of the Fundamental Period of Vibration for Moment Resisting Concrete Frames

An Investigation of the Fundamental Period of Vibration for Moment Resisting Concrete Frames

Investigation of RC Buildings with Basement Floor using Single and Two Loaded Approaches in TBEC-2018

Estimating vibration period of reinforced concrete moment resisting frame buildings

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